TCP-Aware Backpressure Routing and Scheduling

Abstract

Abstract-In this work, we explore the performance of backpressure routing and scheduling for TCP flows over wireless networks. TCP and backpressure are not compatible due to a mismatch between the congestion control mechanism of TCP and the queue size based routing and scheduling of the backpressure framework. We propose a TCP-aware backpressure routing and scheduling that takes into account the behavior of TCP flows. TCP-aware backpressure (i) provides throughput optimality guarantees in the Lyapunov optimization framework, (ii) gracefully combines TCP and backpressure without making any changes to the TCP protocol, (iii) improves the throughput of TCP flows significantly, and (iv) provides fairness across competing TCP flows.

The Latency Performance Analysis and Effective Relay Selection for Visible Light Networks

“…Further, for the aggregate traffic forwarded by the VLC AP, an efficient routing algorithm is proposed based on the back-pressure theory in the core network. Some studies have investigated the utilization of back-pressure theory to improve network performance, specifically within the Transmission Control Protocol domain [18]. Additionally, alternative research has concentrated on employing back-pressure algorithms to facilitate relay selection in wireless sensor networks and wireless multi-hop networks [19].…”